Note

TSCA Definition 2017: A complex combination of hydrocarbons produced as the lowest boiling stream in the vacuum distillation of residuum from atmospheric distillation of hydrocracked shale oil. It consists of hydrocarbons having carbon numbers predominantly in the range of C11 through C25 and boiling in the range of approximately 205.degree.C to 400.degree.C (401.degree.F to 752.degree.F).